Boiler cleaner



H. M. VARIAN BOILER CLEANER Oct. 4, 1927.

Filed y 29. 1919 2 Sheets-Sheet l H. M. VARIAN BOILER CLEANER Oct. 4, 1927 1,644,211

Filed May 29. 1919 2 Sheets-Sheet 2 F:- Ir b: v E

wvmloz m MM mwwmww Patented Oct. 4, 1927.

UNIT-ED STATES PATENT OFFICE.

HOWARD M. VARIAN, OF DETROIT, MICHIGAN, ASSIGNOR, BY MESNE ASSIGNMENTS,

'IO DIAMOND POWER SPECIALTY CORE'ORA'IION, OF DETROIT, MICHIGAN, A GOE- BOILER CLEANER.

Application filed May 29, 1919, Serial No. 300,638. Renewed December 5, 1925.

The invention relates to boiler cleaners more particularly designed for use in connection with boilers of that type known as Scotch boilers. \Vith such constructions the combustion. gases are carried through the body of the boiler in banks of tubes which connect into the smoke box leading to the stack. There is also arranged within the smoke box vertically extending tubes for the 1,0 passage of said gases, all of which tubes re quire periodic cleaning.

In the present state of the art various constructions of cleaners have been applied to boilers of this type. The present invention consists in an improved. construction having a number of features of advantage, as hereinafter set forth.

In the drawings:

Figure 1 is an elevation of the cleaner as mounted within the smoke box of a boiler;

Figure 2 is a longitudinal section therethrough on line 2-2 of Figure 1;

Figure 3 is a similar section on line 3-3 of Figure 1.

A is the smoke box of the boiler which is divided by the vertical partitions B and B into the compartments C, D and E. The side compartments C and E connect with banks which are of less depth than the bank in communication with the compartment D inasmuch as the latter has a downward extension D arranged between the fiues F and F. G is the water heater arranged within the stack above the compartments 0, D and E and having vertical tubes extending therethrough.

My improved cleaner consists in a tubular frame having longitudinal tubes or head ers II and I which extend parallel to each other into the compartments C, D and E and through the partitions B and B, said headers being cross connected by vertical tubes J having nozzles discharging towards the banks of tubes. There are also provided horizontally extending blower tubes K connecting with the upper header and extending beneath the vertical tubes Gr. Steam is supplied to the blower frame from a supply conduit L through the medium of the swing ing conduits M and N. The former has a swivel connection with the supply conduit L, as indicated at 0, while the conduit N has the swivel connection P to the frame and a swivel conection Q, to the conduit M. Thus the frame is permitted to travel a sufiicient distanceto sweep all of the fiues in communication with the sections 0, l) and E which are in the path of travel of the blower pipes J. As has been stated, the tubes in communication with the section D are below the tubular frame and therefore are out of the path of the blower pipe J. l have, however, provided for the sweeping of these tubes also through the medium of a blower pipe R which is connected to the swivel O and is therefore rocked when the frame is moved longitudinally. The blower pipe It is preferably of substantially triangular form and the angle of swinging movement is such that the several sides of the triangle. will together sweep all of the tubes in the section Dwith the exception of a few that are beyond the radius of the swinging unit. To clean these tubes also the end of the unit is provided with an inclined nozzle S which will direct a jet outward and cover the additional area. 1

To facilitate the movement of the frame and also to hold the various blower pipes in proper relation to the tubes to be swept thereby, l have provided a wheeled base for the frame and suitable brace connections for rigidly supporting the blower pipes in relation thereto. This wheeled frame comprises the wheels T mounted adjacent to the header I and the wheels T on an outrigger frame extending beneath the laterally extending blower pipes K. This outrigger frame consists of horizontal rods U connected to the header I, inclined brace rods U extending from the outer ends of the rods U to the vertical blower tubes J, and vertical brace rods U extending from the outer ends of the rods U to the horizontal blower pipes K. This will form a substantially rectangular frame with a comparatively wide wheeled base so that the blower tubes are held in proper relation to the surfaces to be cleaned. I have also provided an anti-friction thrust bearing for taking the reaction from the jets of the Vertical tubes J, this bearing being formed by rollers V at the outer end of the outrigger frame. The rollers T, T and V engage suitable tracks, preferably formed of angle bars as shown at V, said tracks being mounted within the smoke box in properly spaced relation.

In operation, when the boiler is to becleaned the frame is reciprocated, preferably by means of a rack and pinion X and Y arranged between boilers, the rack bar being connected with blower frames in said boilers. lVhen steam is turned on it will be distributed through the tubular frame to all of the several blower tubes and when said frame is reciprocated the jets will be directed against the surface to becleaned and into the tubes extending therefrom. The wheeled frame to a great extent eliminates friction and the wide wheeled base gives stability to the whole structure.

What I claim as my invention is 1. In a boiler cleaner, the combination with a reciprocatory cleaner member, of a swivelled supply connection to said reciprooatory member, and a second cleaner member mounted on a movable portion of said swivel supply connection and rocked thereby.

2. In a boiler cleaner, the combination with a reciprocatory cleaner member, of a rockable cleaner member, and a swivelled supply connection for said cleaner member having a movable portion on which said rockable cleaner is mounted.

3. In a boiler cleaner, the combination with a reciprocatory cleaner member and a stationary supply conduit therefor, of a flexible connection between said cleaner and supply conduit comprising a swivelled member, and a rockable cleaner member mounted on a. movable portion of said swivel member. 4. In a boiler cleaner, the combination with a reciprocatory member and a plurality of blower tubes carried thereby for sweeping different areas in the reciprocation of said member, of a rockable blower member for sweeping another area, and a flexible supply connection for said blower members including a swivelled member on a movable portion of which said roclrable blower member is mounted. V 5. In a boiler cleaner, the combination with a reciprocatory blower pipe, of a supply pipe for said blower pipe angularly movable in a plane parallel to the direct-ion of reciprocation of the blower pipe, and a second blower pipe mounted. upon, supplied by, and angularly actuable by said supply pipe, and traversing an area at one side of that traversed by said reciprocatory blower pipe. 6. In a boiler cleaner, the combination with a reciprocatory blower, of a supply conduit and a connection between said supply conduit and said reciprocatory blower, an angularly movable blower, mounted on said connection and movable therewith.

In testimony whereof I afiix my signature.

HOWARD M. VARIAN'. 

